High pressure lubricating system



Oct. 16, 1934.

W. L. MORRIS HIGH PRESSURE LUBRICATING SYSTEM Original Filed Marh 11I 1929 4 Sheets-Sheet l IN VEN TOR.

Wf www@ A TTORNEY 06f. 16, 1934. W MQRRls HIGH PRESSURE LUBRICATING SYSTEM Original Filed March 1l, 1929 4 Sheets-Sheet 2 L. Nm

IIS/VENTOR.`

ATTORNEY Oct. 16, 1934. W L. MORRls HIGH PRESSURE LUBRICATING SYSTEM 1929 4 Sheets-Sheet 3 Original Filed March 11.

IN VEN TOR` WwHhH ATTORNEY I N VEN TOR.

A TTORNEY,

Oct. 16, 1934. w, L.. MORRIS HIGH PRESSURE LUBRICATING SYSTEM original Filed March 11. 1929 4 sheets-*sheet 4 l is-*in the provision of means'for withdrawing lu- 'position of forcing in the lubricantunderpres- 'l vhigh pressure, showing an angle of zero", Fig. 8, 90, and Fig;` 9, f

"ff-l5 detaching the feeder inyautomatically applying perspective of the lubricant plunger; Fig.'17 is a .15,29 comprising a system for carrying'out the inveninFig. 17; Figs.` 19 kto 25, inclusive, are diagram- Patented Oct. 16,' 1934 l l UNITED STATES PATENT oFFlClE.A e

tiren Passerini; LUeaIoATING SYSTEM Wiliiam L. Morris, ,(JliicagaVY lll., assigner, by mesne assignments. to The Lubrication Corporation, South Bend, Ind., a. corporation of Dela- Ware Y K i Application March-'11, 1929,`Serial No." 346,115 VRenewed September 16, 1933 L esclama. (ci azie-47.4) j

This invention relates ingeneralrto a high presdle in a vertical position, as shown in Fig. 6, with 'sure lubricating system and maybe otherwise deall airports closed but with the low pressure luscribed' as `a lubricantA booster; system. A I bricantopen to the sleeve valve; Fig` 12 isa dia- Gne ofthe principal 'objects' of thefinvention grammatic view of the same set of portingsinlth'e ,a

vbricant such'as grease, heavy oil andthe like from sure, the air ports lbeing diagrannnatically shown an open receptacle or from a container without on the' section line in Fig. 4; Fig. 13 is an enlarged pressure, to advance it under low pressure to the section of one of the spherical head bearing con- `place where it is'used in f'a' shot or Vslug underk necto'rs with the port atan angle of 60, Fig; 4

Aiurther object oi theinvention is to provide 30; Fig. l14 shows a pull-up sleeve with a U- nfleans for. quickly attaching and detaching the Shaped endopening for engaging and passing over high pressure feeder from suitablettings for rey'the sphericalhead connector; Fig. 15 is a section ceiving the grease, and by the act of attaching and taken on the line 15-15 of Fig. 14; Fig.'16 is a high pressure to the grease. -f f f siderview of a modied formof lubricant pressure @ther and-further objects *of the 'invention will booster havingv independent vmanual clamping appear hereinafter,--theaccompanying drawings means for attachment'to spherical head fittings; illustrating a preferred embodiment of apparatus Fig. 18 is a plan view of the'modifcation shown tion;l y matic views showing the different positions of the pIn/the accompanying drawings,Fig. 1 illusparts assumed-iny applying, using and removing trates a complete system of portable' lubricant vthe booster pump. f Y Y storage, aV low pressure air driven pumpjto take A-successul high pressure lubricantfeeder has lubricant from storagel and deliver it througha many renements that arev neithernecessarynor Aflexible hose to the high pressurelocation, `an air actually used in pumpinglubricant under lower driven Ybooster pump, and air'e'adily Vdetachable pressure, and the features shownv and described connection for application Ytoany one of many are lto serve the new purpose of making high pres- Ispherical head fittings located at ther diererit sure lubricant feeding both possible andjvpracti- 8 lf3!) bearings of mechanism to be lubricated;fFig. 2 is cable. Y, f' 5 a section on the line 2'-'2 of Fig. 3 through the l Among the'desirable 'featuresto be'covered in air driven low pressure lubricant pump; Fig. 3 is afhigh pressure lubricant feeder arethe followa section on the line 3;-.3jof Fig. 2;"Fig. 4 is a ing: the connecting bearing nipple must be of a vertical longitudinal section of the air driven high form to' stand very high tension at the joint to pressurebocster pump with the cylinderhead in avoid leakage; pressure on the lflexible hoseleadlubricantcoinpressing position; f Fig. 5 is a' secing to the booster must be light to avoid earlydetional detail 'showing the air ports ofthe cylinf struction and leakage of lubricant; pressure must `der head in lubricant suction position; Fig. 6 `be applied to lubricant as close as possible to the shows the head end of the cylinder with the airv bearing to avoid loss of capacity due to the w49 points 4correctly located in thenon-rotatable air compression of entrained ai-r carried with the valve cap;` Fig; '7 is an end view oi the air cylinder lubricant; intermittent pressure applications head showing the air ports correctly positioned through a exible hose should be avoided as therein Fig. 8 is a top yView of the pressure boost'- they cause loss of quantity due to the elasticity of er; Fig. V94 isa plan section of like parts shown the hose; a heavy high pressure hose is expensive jflfo in Fig. 4, the ball tip connector having its lubri'- and cumbersome to handle, causing loss-of time; .m0

' cant entrance port at a different angle; Fig.`10 lubricant'should be shot into the bearing atan is a diagrammatic View showing inthe lower secextremely highpressure and under-the highest' tionthe positionof the lubricant sleeve discharge possible velocity so that the lubricant will be unport as taken fonthe line lil-' -lG of Figs. 4 Iand: 9 der highpressure as itY enters the bearing and b'ej 5i? and above thisthe` lubricant suction port' taken iore it has had time to. ooze out it willcoverthe 1,95 on the line 11-11 of Figs4and 9 and at the top bearing; toavoid waste and permit high pressure the air port taken on the'joint line 6'2/68of Fig. a Vxed amount of lubricant must beicd at `each 4, all as in the lubricant suction position,as shown manual operation, and the feeding automatically in Fig. 5; Fig;` V11 is a similar diagrammatic View stopped; the operation of the feeder should cause fofthe same setofporting's with the control hana suction on the joint between the bearing nipple 11,0

the supply pipes with lubricant shouldk be by some l method other than using lubricant from the high l pressure ram, as each cubic inchof lubricant disv placement requires about' 100 cubic inches of cornpressed air, making a "very cumbersome and power-wasting booster if these light duties are performed with the extremely high pressures'.

This booster system contemplates fusingy say 100 pounds pressure for the pump which would fill the voids, and possibly 100 times this pre'ssu're'10,`000" -PolmdS/OI F111@ hydaUlCTamn- No adjusting featufes are requiredv i@ .take up the weer; Qthe att-aching churn?v 0r to meet varyingnsizeshofattachment V,as the surplustravel al' r lgwedgfor' the. -plunserVA and, Sleeveyalve take` un .there variations-g frills. 15.11.012 A the Cese with, the ,mo difiedhform shownin Figs.; 17 and 18 infwhich the Clamping ftraveljis limited and the .attachtail in Figs.2;and 3. y 1 l -In the lubricant @einem s opening for `the grease members 29.

ments mustbe. closelte .the Same. Size, thewear `being taken up bythe mutsen-ille pull-rods-g.

Referring moreparticularlyto the drawings, the systemin Ageneral is shown in Fig. 1 and comprises a lubricant container "V mounted on a wheel truck21 having a shelf 22'for supporting alow pressurepumpfwhhfis, hgwn 111111011? deer alsuction plate rests uponthelubr icant and fits loosely inthe container. A*At the center of the plate is a `suction pipe 2 4'extendins through thefplategse theta-S110- :tion-.opening is provided .wat thefunderv side of the plate., Lv,Connectingthenrppec endA of the vertical pipe 24 with the lowpressurepump 'aresuction' kpines 2.5, which, have, Swivel joints al? theirfends, shownv in-detail in Fig. 2,5to permit the suction plate 28fto rise and fall in following the lubricant. f'lfhepsuction pipe 24attached to the suction-plate .23 is freeto slide vvertically in guide 30at the top .of thecontainer. 20,v .l L ,1.

As shown in Figs. 2 and 3, the body of pump .w31 has two similar caps 32 `at theair end ofthe pump andj33 at the lubricant end. :ln the pump an lair v.rotary memberi y34 drives a j lubricant rotor, 35 Vby .fmeansof Va; tongue Yand .grooveconnectiom 36 betweenthernf lilachpofA the rotorsV have spring pressed. valve varies 37l for making-a connection in the eccentric chamber-ofy the pump in which `its rotor is rnovable.Each capw32 andy 33 has two openings, the cap 32 havingan air-pressure openc .ing for a ttingiv andan air exhaust opening 39;

vand the cap 33 having a lubricant suction opening .from one'l of the pipes 25and a lubricant discharge The` genera1.airs upply and hose are *other suitable V,hose covering 27 enclosesan air -hose 28 and agreasehose 29 vwhich extends from' the y,low-.pressure pump tothe booster. An. air

.va1ve40A controls the. admission of. air under pres'- surefrom the air supply hose'26 through .the

...fitting v 38, and valsoto the. airrhose'28 which extends through thehose-covering 27 to the lubrir :antbooster..l i

Each of the .lubricant swivel connections Abue- `tweenthe pipes'24 and .25 comprises'an endl f1tindicated inV Fig. 1 with the' numeral' 26, `and, acanvas or ting 41 and a swivel shoulder nipple l42 fitting therein which is held upon its ground fitting face by a split clamp nut 43. At the end of grease hose 29 is a threaded end fitting 44 for connecting the Ahose to the pump, In Fig. 1 the broken outline 45M' represents the positions :of the section pipes 24and 25 when the suction plate 23 is at the highestelevation in the container 20 and the broken outline 46 indicates their positions when the suction plate is at its lowest level.

The booster pump connected to the air and grease hoses 28 and 29 in Fig. 1 is shown in detail `in Figs.4 to 16. A tubular body 50 has a lubricant supply pipe 5.1 connected to the lubricant supply hose 29 and a discharge slot 52 at the other end communicating with a cylindrical bore 53, at one end of which is a cavity or space 54 called the high -compression chamber.

A lubricant plunger 55 also shown in Fig. 16 has a projection 56 at one end that travels in and ,closes a slot 57 ina sleeve valve 58 rotatable in the bore 53 for-producing high compression in the chamber 54. Slot A57 ends `at a point 59 in Fig. 4, and the plunger 5,5 is placed inthe sleeve 58 from the other orcompression end. A 'stuffing boxnut 60 closes leakage around the sleeve58 but permits Athe sleeve to he rotated and moved/.endwise with respect v*tothe fitting 50. y

kA tthe end of the-plunger 55 is an air cylinder 61, one end *of which has an integral head directly kattached to the ysleevey valve V58 .with a piston disk 62 attached. tothe' end of plunger 55 and having cup leathers 63, a dividing .washer 64, and a clamp disk drawn up tight with a nut 66 for makingy ,la fluid-tight connection with the interior of the air'cylinder 61. The piston disks 62 and 65 are :extended attheiredges to bear against the cylinder so that Ythey will Aguide the piston without undue strains on theplunger v55.

A VAn outer ported head 67 and an air valve cap 68 have their ports arranged around their circumferen'ces, asshown in Figs. 6, 7, 1011 and 12, but to more clearly indicate' then relationship of inlet zandou'tlet, the sections have been brought around toa common plane in both Figs. '4 and 5. Port VA. is the'air inlet,vportB is'the large air outlet, L and port C is the small air outlet, all in the nonyrotatable air valve cap 68. Port D communicates 'with' the outer or lubricantv pressure side of the .piston and port E opens to the inner or suction side of the piston through a passage 74 both ports @being located inthe `outer head 67. The port C is made sm'aller than fthe port B tol retard )the light loaded .piston while takingits lubricant from ithe chamber 54, and the'piston has air cushion pockets 69'for engaging with vend projections 70 `within the air cylinder 61 to prevent a metallic `impact at` the endsof the stroke.

A handle 71 is attached to the outer head 67 andtravels from line 12, as shown in Fig. 6, which corresponds with the position of the parts shown in Figs..4 and 12, to line 10 in which position the parts are as shown in Figs. 5V and l0. When the handle is positioned as shown in Fig.` 6,.the position of the parts is represented by Figs.' 7 and 11,

all Vair ports being closed, the lubricant port 57 being open one passage and closed in return.

Projecting from .the headf67 is a stop 72 which engageswith the lower ends 73 of levers 75 at,-

,tached to the airgcapy 68 and limitingthe travel `of thefhandle 71 to lines 10 and 12.

Air valve1cap 68 is attached to the two levers v75 with pivot 'screws 76 and to the head 67 with a screw 77 whichis threaded into the -head 67 and locked in place with a' lset screw 78 and ajsoft izo les

' 50 (seeFigs. 4 and 6). "16 and 82' of lever 75 are two pivot pins 83 to vwhich are connected the two legs of a U-shaped plug 79 as shown more clearly in Figs.f5 and '7.y

IThe head 67 is attached tothe cylinder 61 with screws 80. l Y l r Airis admitted tothe air valve cap through a pipe 81 which makes a connection with the ilex- -ible air hose 28, as shown in Figxl. The' outer end of the air 4pipe 81 slides freely in a-support 82 securedto or surrounding the lubricant supply pipel.y M U The upper end of the `levers'l Vare pivoted at the ends of a pivot pin 82' which extends through and is supported at the'end of the tubular body Between the pivot pins pulling member Y84. The sides of this pull member are opened upzwhere .they pass the inner end of the cylinder, and a compression strut 85 is placed between with attaching screws 86 to prevent it from closing in under heavy tension. At

the joining` end of the pull member is acylindrical .hub .87 `which bears against shoulder 88 of the pull-up sleeve 89which slides on the projecting -end 90 of the tubular body 50. This sleeve 89 has a. U-shaped opening' 91 at its outer end, as shown in Figs. 9,v .14 and 15 for receiving a sphericall head `lubricantreceiving attachment shown in section in Fig. 13.. As shownin Fig. 14, the center of the spherical internal end support bearingis on a line `92 and the entrance opening for the spherical attachmenthead is on aline 93 thereby,7 insuring a line 'of'bearing 94, as shown inFig. 15, which is more than a hali Vcircle and prevents the attach- 'ment from slipping toward the opening 91 when compressed at its 4bearing 94.

At the projecting end 99 of the tubular bodyv there is a joint face disk 95 for.V making a Y lubricant-tightjoint on'an attachment head, as

mechanism 103 U:anchas an automobile chassis which may comprise a large number ofv such attachments with openings inthehead at all conceivableangles and locationsf A Figs. 9 and 19 to 25 show the 'pull-up` sleeve 89 as drawnv toward lthe bearing Adisk 95 with a vsplierical attachment 9,8 between them by pressure from the lowv pressure lpump 31 delivered tothe chamber 54 located between the seat 95 .andthe end of sleeve and plunger 58,and 55,

the pressure being multiplied-by the levers on a. ratio of rabout `four to one. The modification shown in Figs. 17 and 18 has separate hand clamping lever 110 which is pivoted onl a` pin 111 with projecting ends112,r"or operating pull rods .113 having swivel ends 1l4to bear against the ends of levers-'115. y These levers 115 engage projecting. pin ends 116 ci lug extensions of the pullup member 84m and are pivoted upon apin-117 supported ina boss extending from the body 50m. Inthis case the pull-up member is much shorter .thanv that shown in Fig. 4. A sleeve valve 55m does not travel endwise, as shown in Fig. 4, and to take this end thrust a collar 1 18 is-formed on the sleeve 55 and the stuiiing box rnut. Bouin Fig. 4 is changed to a ground joint shoulderbearing coupling nut 69m. An air. valve cap 68m has projecting stop lugs 119 used instead of the ,ends '1,3 oi levers 75, as shown in Fig. 6,l and the holding screws 120 secure the cap 68m to the body 50m. A pipe end support82m is in thefvorm ,of two half clamps as the pipe 8l does not have .an end movement as required in the' form shown in Figs. l and 4. The operation of this high".

pressure booster isas follows: a portable lubricant storage'receptacle and truck 29 and 21 together with theV air and lubricanthose enclosed in the iiexible casing 27 and the booster pump at nism to be lubricated, the air supply hose 2.6

being either located or connectible at diierent stations to different air valves 26a. Ordinarily the air valve 40 is left open to allow three connections, the air being controlled at the valve 26a.

Container 29 may be the drum in which they lubricant is shipped andheld on the truckn21 by the special cover which is secured to the truck. .In moving the booster from one attachment 98 to another, the booster handle 71 should be in:

an angular position, as shown in Figs. 10 and `19,

and if desired may be held releasably in this position by vany suitable means. In handling the booster pump one handV is placed upon pipes 51 and 81 and the other hand upon the handle 7ll remaining in these positions'through all operations. The pull sleeve 89 at the feeding end of ,thebooster is rotated upon the nozzle end 90' of the body 50 yso that its attachment entrance or opening 91, as shown in Figs. 14 and 15, mayy be at the top, side, bottom, or in any other position to engage the attachments.

In Figs. 19 to 25 are shown diagrammatically 'the operating positions of the parts longitudinally while the ports are positioned with the handle. 71 so that they assume the positions shown in Figs.

itsV end are moved to the location of a mecha- T35 its 'no n l0, 11 and 12; Fig. 19 shows theV arrangement ofr lthe parts after their ymovement bypressure with the handle 71 directed away fromavertical center line when changing the booster from a lled bearing attachment to the next one to be supplied (indicated by the circle designated by the arrow 'above Fig. 19) andas indicated by the three sets 'of portings on the vertical line of Fig.

10; Fig. 20shows the arrangement of the parts after moving the handle to a vertical position as Yindicated by the three sets of Vportingson the vertical line and just before the lubricant enters from the low pressure supply pipe 51,` as shown in Figs. 1 and 4 and before parts have moved;

Fig. 21 shows the position of the parts as altered by the. inow of lubricant through the pipe 51:, the clamping of theattaclvirnentl 98 which is shown as a circle and beingei'lected by pressure in chamber 54 exerted againstthe end of thesleeve valve 58 and the plunger 55 while the booster nozzle 90 is held against the attachrnent'98,V and,

as pressure increases at the joint face which bears against the attachment the pull together on the joint between the attachment and the booster is multiplied to avoid leakage; Fig. V22 shows the position of the parts correspondmg with Fig. 12

-on the vertical line through the4 three setsof portings with the handle 71 at an angle and in front ofthe centerline of the section just before the high pressure ram starts its movement; Fig. 23 shows the position of the parts after the piston and Vthe ram have forced lubricant into Ythe bearing attachmentunder very high pressure,r

the pressure in the chamber 54 simultaneously raising the pressure on the engaged joint face of the `disk Fig. 24 shows the position of the parts corresponding with that shown on the vertical line through the three portings in Fig. 1'1 and although the handle Vllstands verticallywith its the air ports shutoi, as in Fig.,21, the plunger with its Vheadend 56 is at the inner end of theV lslot 57 and shuts offjany flow of lubricant-fromy itssupply 5l, making the return passage by the `port 52 inoperative when moving from Fig. 23 to 25;.Fig- 25'shows the position of the 'parts corresponding with Fig. l0 on the vertical line through 'the three pcrtings just before the piston has started. to withdraw the plunger 55; and Fig.. 19. shows the 'position .of theparts corresponding with that indicated by the vertical line of Fig. 10, but showyingfthe plunger withdrawn and filling the bore Aof sleeve valve 58 by. sucking lubricant outof the chamber 54, thereby drawing the sleeve valve 58 toward; the attachment face and `opening the clamp from` the attachment so that the booster can be. removed andplaced upon another attachl .ment 98 for feeding lubricant to it.

. It should be understood that the lowfpressure pump 31 shown. in Figs. 2 and 3 withdraws lubricant from the receptacle. 42i) and feeds it to the booster under the pressure for` which it is adaptr ed and also that it brings'thelubricant in the .feeding line up to such a pressure thata balance -is created between the air and lubricant sides oi' thefpump so that a balance is created controlled 'entirely by .the `air pressure and therefore startfing, stopping and changing its speed to increase the pressure of the lubricant as this. balance is Valtered by` the. 'feeding of lubricant fromY the booster.

The operation of the booster pump is" to place it von an attachmentQS vwith the handle ".'1 in plying'means for connecting the pressure niem-` "position as indicated on the line yl0 of Fig. v6 `when the parts are in the position shownv in Fig. .119,.and while holding it in contact kwith the attachment, to move Athe handle to vertical position, then in the opposite direction tothe line l2 of Fig. 6, as indicated' in the Ypositionshown in Fig. 22 and then back to the line l0 of Fig. 6 where -it is ready to be removedand engaged with the next attachment. ,l

A slight deviation in the alignment of the open- Vingsbetween the booster and the attachment 93 `.surface `around va considerable free movement as it is'desirable toavoid straining the end of the attachmentv 98. Y

is immaterial as the disk 95 covers' anv excess of the attachmentp'ort;toprovide I claim: y. 1.1In a high pressure lubricant feeding system,

.means for injecting lubricant atV high pressure intoelements tobe lubricated, said means including a pump having relatively movable pressure generating members and a pair of relatively movable clamping members adapted to embrace aylubricant receiving .element and force multibers with theclamping` memberswhereby thereaction of the pressure membersis augmented and kutilized to actuatethe clamping members.

2. In a high pressure lubricant feeding system,

means fori/injecting lubricant at -high pressure the pump the pressure of which causes the pressure members to close the clamping. members on the receiving element. f

3. Inrahigh pressure lubricant feeding system,

meansl for injecting lubricant at high pressure into elements to be lubricated, said meansjncluding a pump having relatively movablegpressure generating members and a pair of relatively movable clamping members adapted to embrace a lubricant receiving element, means for connecting theY pressure members with the clamping :members whereby the reaction of the pressure members actuates the clamping members, means for admitting grease at low pressure intothe pumpgthe pressure of which causes the pressure members to close the clamping members on the receiving elementl and means for thereafter actuatingthe pump whereby the clamping members are tightened on the receiving element and lubrif cant is forced therein under high pressure.,

e. In a high pressure lubricant feeding system, means for injecting lubricant at high pressure into elements to be lubricated, said means including a pump having relatively movable pressure.' .generating members and a pair of relatively movable clamping members adapted to embrace a lubricant receiving element, means for connectingv the pressure members with the clamping members whereby the reactionr of theV pressure 'members actuates the Vclamping members,means yfor admitting grease at low. pressure intoithe pump the pressure of which causes vthe pressure ymembers `to close the clamping members on the receiving element, and means for thereafter actuating the'pump whereby the clamping members are tightened on the receiving element and lubricant is forced therein under high pressure, .said

Vgrease supply vbeing cut off during the retraction of the pump members whereby said retraction is eiective to separate the clamp members.V

5. In a high pressure lubricant feeding system,

a lubricant pump having a nozzle, adapted to Acooperate with a. lubricant receivingnipple, and

a reciprocatory element for ejecting lubricant through said nozzle, a fluid motor having a reyciprocatory element for actuating said lubricant ejecting element and means for clamping the nozzle to a nipple 'operated by the reaction from theoperating forces of the reciprocatory elements `of the lubricant pump' andfluid motor.-

`its ends to the cylinders of said pump and motor respectively, and means for clamping said nozzle to a nipple, said means being pivotally connected 'to an intermediate point of said lever whereby the reaction on the motor and pump cylinders of the pump operating pressure is'caused to actuate the clamping means.

7; A lubricant Afeeding pump comprising a nozzle having a lubricant port,`a sleeve valve and a plunger movable therein for receiving and discharging lubricant through said nozzle, a fluid pressure piston andl cylinder connected directly to the vplunger and valve and movable relatively to the nozzle, a clamping attachment tting movable Von the nozzle, andv pressure multiplying means connected between the attachment fitting and the cylinder for holding the fitting in place in accordance with the pressure on the lubricant within the nozzle.

8. In a high pressure lubricating system,' a source oflubricant supply under low pressure, a booster pump connected with said source, power means for operating said pump,'said pump being provided with a discharge nozzle andv clampingv means cooperating therewith to make lubricanttight connections,withelements to be lubricated,

Vand means for operating said clamping means by said low pressure lubricant through said boostlprovided with a discharge nozzle and clampingV Vsaid booster pump and thereafter by the high 61711111119- 1 A 9. In a high pressure lubricating system, Ya source of lubricant supply under low pressure, a

booster pump connected with said source,powermeans Vforoperating said pump, saidpump being l pressure lubricant in said booster pump. k

10. In a high pressure lubricating system, a source of lubricant supply under low pressure, a booster pump, said pump being provided with a discharge nozzle and clamping ymeans cooperating therewith to make lubricant tight connections with elements to be lubricated, means for operating said clamping means initially by said low pressure lubricant and thereafter by the high pressure lubricant in said booster pump, and a unitary device for controlling said operating means and the injection of lubricant by f Y. said pump.

v 1l. In combination, a high pressure lubricating gun having a discharge nozzle rigid therewith, clamping means adapted to form a lubricant tight connection between the rigid nozzle and elements, to be lubricated, a source of lubricant supply-under low pressure, a eXible conduit for conveying lubricant under' low pressure to said gun, and means actuated by the lubricant pressure in the gun for operating the connecting clamping means.V Y

12. In'combination, ka iluid pressure operated pressure booster lubricant gun having a discharge nozzle rigid therewith, means adapted to form a lubricant tight connection between the rigid nozzle and elements to be lubricated, a source of lubricant supply under low pressuraiiexible means for'supplying the gun with a uid motive power and with lubricant, and means actuated by the lubricant pressure in the gun for operating .the connecting means.

13. In combination, a manually controlled pressure booster lubricant gun having a discharge nozzle rigid therewith, means adapted to form a lubricant tight connection between the rigid nozzle and an element to be lubricated, a source of lubricant supply under low pressure, flexible means for supplying the gun with motive power and with lubricant, and means actuated by lubricant pressure at the gun for operating the connecting means.

14. In a pressure lubricating gun, a discharge nozzle, a booster pump for supplying lubricant under high pressure to said nozzle, and manually operable means for effecting a lubricant tight connection between said nozzlel andan element L to be lubricated and for simultaneously tending l5. In a pressure lubricating gun, a discharge nozzle, a booster pump rfor supplying lubricant under high pressure to said nozzle, and means operable to effect a lubricant tight connection between said nozzle andan element to be lubricated and for simultaneously drawing a charge olfvr lubricant intothe pressure cylinder; of said, booster pump.` y l 1 v 16. In a pressure lubricating gunpa discharge nozzle, abooster pump .for supplyinglubricant under high4 pressure to said nozzle, and means Y operable forclamping said nozzle to anelement f I to be lubricated and for simultaneously tending"l to expand said pressure cylinder f of V`said boosterA Pllmn and chargingthe same with lubricant. ,y

17. In a'pressureklubricating gun, a discharge nozzle, a booster pump, having an Yoperating.pistorn-fior` supplying lubricant lunder* high pressure y to said nozzle, means operable by lubricant pressurel to enect a lubricant tight connection between said nozzleV and an element to be lubricated and for breaking said connection and simultaneously moving said booster pump operating piston to its retracted position.

1S. In a pressure lubricating gun, a discharge nozzle, Va booster pump for supplying lubricant under high pressure to saidV nozzle and means operable by the movement of said booster pump to a position at which high pressure on the lubricantv may be produced for eiecting a lubricant tight connection between said nozzle and an element to be lubricated.

19. In a high pressure lubricant feeding sys-` tem, a pair of coaxial cylinders of diierent bores, a pair of unitary coaxial pistons adapted to work in said cylinders, said cylinders having inlet and exhaust ports therein, a casinghaving ports for supplying air to one cylinder and lubricant to the other, and manual means for causing relative rotation between the cylinders and the casing to control the registry of the corresponding ports.

20. In a high pressure lubricant feeding system, a pair of coaxial cylinders of different bores, a pair of unitary coaxial pistons adapted to work in said cylinders, said cylinders having inlet and exhaust ports therein, a casing having ports for supplying air to one cylinder and lubricant to the other, and manual means for causing relative rotation between the cylinders and the casing to control the registry of the corresponding ports, and means operated by the lubricant pis- Y ton for closing the lubricant inlet port during Y municating with said cylinder, means associated'` with said piston for rotating said cylinder, and means responsive to the rotation of the cylinder for operating the clamp mechanism of said nozzle to clampingly engage a lubricant receiving fitting. Y

23. A lubricating device comprising, a pump cylinder, means 'f or supplying lubricant to said cylinder, a piston mounted for reciprocation in said cylinder, a Valve'lfor controlling said piston, a

manually operable member for actuating said valve and for rotating said cylinder, a clamp type discharge nozzle communicating with said cylinder, and meansresponsive to the rotation of the cylinder for operating the clamp mechanism-of 1j said nozzle to clampingly engage a lubricant receiving fitting; I f 1 24,'Aflubricating device comprising,` aybarrel, apump cylinder movably mounted in said-barrel,

means for admitting lubricant vto said cylinder, a.

movement loetwee'n'rfthe cylin'deran'd the barrel,

a discharge nozzle -of the clamp type-communi# catingfwitlisaid cylinder, and means responsive` to longitudinal'movement of said cylinder relative to said barrel vfor causing said clamp'nozzle to clarnpinglyv engage a lubricant receiving fitting.

v25. Alubricating device comprising, a pump?A cylinder, means for supplying' lubricant to said cylinder, a piston mounted for reciprocaton-in* said cylinder', a discharge nozzle of the relatively movable jaw clamp type communicating with@ said cylinder, and means for selectively operatingA saidpiston and clamping mechanism of said WILLIAM L. MORRIS.VV

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